| 有关砂土地基承载力数值解析问题的讨论 |
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| 引用本文： | 彭芳乐,M.S.A.Siddiquee,田中忠治,龙冈文夫.有关砂土地基承载力数值解析问题的讨论[J].岩土力学,2004,25(Z2):475-478. |
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| 作者姓名： | 彭芳乐 M.S.A.Siddiquee 田中忠治 龙冈文夫 |
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| 作者单位： | 1. 同济大学,地下建筑与工程系,上海,200092;东京大学,土木工学科,东京,1138656
2. 东京大学,土木工学科,东京,1138656 |
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| 摘 要： | 以砂土地基的极限承载力为对象,讨论了古典理论解与室内模型实验值之间的差异,并结合试验中所观察到的现象对其原因进行了简要的分析,最后,利用有限元解析对各种极限承载力的计算方法进行了客观地评价.砂土材料强度具有明显的各向异性以及软化特性,并与周围压力大小以及密度相关.另外,砂土地基的破坏呈渐进性,砂土的粒径大小影响它的承载力以及变形破坏.结果表明,只有考虑砂土以上的各种特性的数值解析方法才能合理地得到砂土地基的极限承载力.
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| 关 键 词： | 岩土力学 砂土地基 极限承载力 数值解析 |
| 文章编号： | 1000-7598-(2004)增-0475-04 |
| 修稿时间： | 2004年4月30日 |
Discussion on numerical solutions of bearing capacity of footing on sandy soil |
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| PENG Fang-le,M. S. A. Siddiquee,TADATSURU Tanaka,FUMIO Tatsuoka.Discussion on numerical solutions of bearing capacity of footing on sandy soil[J].Rock and Soil Mechanics,2004,25(Z2):475-478. |
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| Authors: | PENG Fang-le M S A Siddiquee TADATSURU Tanaka FUMIO Tatsuoka |
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| Institution: | PENG Fang-le1,M. S. A. Siddiquee2,TADATSURU Tanaka2,FUMIO Tatsuoka2 |
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| Abstract: | Objectivity of numerical solutions of bearing capacity for strip footing on sandy ground is evaluated based on the model experimental results. The deformation and strength of sandy material is always influenced by a number of factors, such as the effects of strength anisotropic, pressure level dependency, strain softening and shear band. In addition, the sandy ground failure is progressive and the bearing capacity is related to the ratio of mean particle diameter to footing width. It is shown that the reasonable bearing capacity of footing on sandy ground can be obtained only by considering the above-mentioned characteristics. |
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| Keywords: | rock and soil mechanics sandy soil bearing capacity of footing numerical analysis |
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